package com.study.java.oop;

public final   class UnitConversion {

    private UnitConversion() {
    }

    public static double y(double l){
        double d = l/2.54;
        System.out.println(l+"英寸转厘米="+d+"厘米");
        return d;
    }

    public static double yy(double l){

        return l/2.54;
    }




}
